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Larynx
Larynx
9
Medical
Graduate
09/14/2010

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Cards

Term
vertebral levels of larynx
Definition
C3-C6
Term
five important junctions at C6
Definition
laryngotracheal junction, pharyngoesophageal junction, vertebral a. entrance level, recurrent laryngeal n. enters larynx, and carotid tubercle.
Term
how do you open/close the vocal fold?
Definition
close: swing the muscular process of the arytenoid cartilage laterally such that the vocal process is swung medially and closes the vocal folds.

open: swing the muscular process of the arytenoid cartilage medially such that the vocal process is swung laterally and thus increases the distance b/t the two vocal folds.
Term
mm. attaching to the oblique line of the thyroid cartilage
Definition
sternothyroid, thyrohyoid, thyropharyngeous (inferior pharyngeal constrictor).
Term
the three membranes of the larynx
Definition
thyrohyoid (thyroid cartilage to hyoid bone), quadrangular (converge as they descend), and triangular membranes (converge as they ascend).
Term
Function of intrinsic laryngeal mm
Definition
open/close laryngeal aditus, open/close rima vestibuli, open/close rima glottidis, and length-tension regulation.
Term
3 by 3 + 2 by 2 rule
Definition
3 folds (aryepiglottic, vestibular, and vocal), 3 spaces (vestibule, ventricle, and infraglottic cavity), 3 apertures (laryngeal aditus, rima vestibuli, rima glottidis), 2 ligaments (vestibular and vocal), and 2 membranes (quadrangular and triangular AKA conus elasticus)
Term
nerve supply to larynx
Definition
superior laryngeal n (internal laryngeal - supravocal mucosa, external laryngeal - cricothyroid m.)

recurrent laryngeal n (infravocal mucosa and all intrinsic laryngeal mm except cricothyroid m)
Term
where do you insert a surgical airway
Definition
just above the laryngeal prominence
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